Line data Source code
1 : /* C/ObjC/C++ command line option handling.
2 : Copyright (C) 2002-2026 Free Software Foundation, Inc.
3 : Contributed by Neil Booth.
4 :
5 : This file is part of GCC.
6 :
7 : GCC is free software; you can redistribute it and/or modify it under
8 : the terms of the GNU General Public License as published by the Free
9 : Software Foundation; either version 3, or (at your option) any later
10 : version.
11 :
12 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 : for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with GCC; see the file COPYING3. If not see
19 : <http://www.gnu.org/licenses/>. */
20 :
21 : #define INCLUDE_VECTOR
22 : #include "config.h"
23 : #include "system.h"
24 : #include "coretypes.h"
25 : #include "tm.h"
26 : #include "target.h"
27 : #include "c-target.h"
28 : #include "c-common.h"
29 : #include "memmodel.h"
30 : #include "tm_p.h" /* For C_COMMON_OVERRIDE_OPTIONS. */
31 : #include "diagnostic.h"
32 : #include "c-pragma.h"
33 : #include "flags.h"
34 : #include "toplev.h"
35 : #include "langhooks.h"
36 : #include "diagnostics/macro-unwinding.h" /* for virt_loc_aware_diagnostic_finalizer */
37 : #include "intl.h"
38 : #include "cppdefault.h"
39 : #include "incpath.h"
40 : #include "debug.h" /* For debug_hooks. */
41 : #include "opts.h"
42 : #include "plugin.h" /* For PLUGIN_INCLUDE_FILE event. */
43 : #include "mkdeps.h"
44 : #include "dumpfile.h"
45 : #include "file-prefix-map.h" /* add_*_prefix_map() */
46 : #include "context.h"
47 : #include "diagnostics/text-sink.h"
48 :
49 : #ifndef DOLLARS_IN_IDENTIFIERS
50 : # define DOLLARS_IN_IDENTIFIERS true
51 : #endif
52 :
53 : #ifndef TARGET_SYSTEM_ROOT
54 : # define TARGET_SYSTEM_ROOT NULL
55 : #endif
56 :
57 : #ifndef TARGET_OPTF
58 : #define TARGET_OPTF(ARG)
59 : #endif
60 :
61 : /* CPP's options. */
62 : cpp_options *cpp_opts;
63 :
64 : /* Input filename. */
65 : static const char *this_input_filename;
66 :
67 : /* Filename and stream for preprocessed output. */
68 : static const char *out_fname;
69 : static FILE *out_stream;
70 :
71 : /* Append dependencies to deps_file. */
72 : static bool deps_append;
73 :
74 : /* If dependency switches (-MF etc.) have been given. */
75 : static bool deps_seen;
76 :
77 : /* If -v seen. */
78 : static bool verbose;
79 :
80 : /* Dependency output file. */
81 : static const char *deps_file;
82 :
83 : /* Structured dependency output file. */
84 : static const char *fdeps_file;
85 :
86 : /* The prefix given by -iprefix, if any. */
87 : static const char *iprefix;
88 :
89 : /* The multilib directory given by -imultilib, if any. */
90 : static const char *imultilib;
91 :
92 : /* The system root, if any. Overridden by -isysroot. */
93 : static const char *sysroot = TARGET_SYSTEM_ROOT;
94 :
95 : /* Zero disables all standard directories for headers. */
96 : static bool std_inc = true;
97 :
98 : /* Zero disables the C++-specific standard directories for headers. */
99 : static bool std_cxx_inc = true;
100 :
101 : /* If the quote chain has been split by -I-. */
102 : static bool quote_chain_split;
103 :
104 : /* Number of deferred options. */
105 : static size_t deferred_count;
106 :
107 : /* Number of deferred options scanned for -include. */
108 : static size_t include_cursor;
109 :
110 : /* Whether any standard preincluded header has been preincluded. */
111 : static bool done_preinclude;
112 :
113 : static void handle_OPT_d (const char *);
114 : static void set_std_cxx98 (int);
115 : static void set_std_cxx11 (int);
116 : static void set_std_cxx14 (int);
117 : static void set_std_cxx17 (int);
118 : static void set_std_cxx20 (int);
119 : static void set_std_cxx23 (int);
120 : static void set_std_cxx26 (int);
121 : static void set_std_cxx29 (int);
122 : static void set_std_c89 (int, int);
123 : static void set_std_c99 (int);
124 : static void set_std_c11 (int);
125 : static void set_std_c17 (int);
126 : static void set_std_c23 (int);
127 : static void set_std_c2y (int);
128 : static void check_deps_environment_vars (void);
129 : static void handle_deferred_opts (void);
130 : static void sanitize_cpp_opts (void);
131 : static void add_prefixed_path (const char *, incpath_kind);
132 : static void push_command_line_include (void);
133 : static void cb_file_change (cpp_reader *, const line_map_ordinary *);
134 : static void cb_dir_change (cpp_reader *, const char *);
135 : static void c_finish_options (void);
136 :
137 : #ifndef STDC_0_IN_SYSTEM_HEADERS
138 : #define STDC_0_IN_SYSTEM_HEADERS 0
139 : #endif
140 :
141 : /* Holds switches parsed by c_common_handle_option (), but whose
142 : handling is deferred to c_common_post_options (). */
143 : static void defer_opt (enum opt_code, const char *);
144 : static struct deferred_opt
145 : {
146 : enum opt_code code;
147 : const char *arg;
148 : } *deferred_opts;
149 :
150 :
151 : extern const unsigned int
152 : c_family_lang_mask = (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX);
153 :
154 : /* Defer option CODE with argument ARG. */
155 : static void
156 187427 : defer_opt (enum opt_code code, const char *arg)
157 : {
158 187427 : deferred_opts[deferred_count].code = code;
159 187427 : deferred_opts[deferred_count].arg = arg;
160 187427 : deferred_count++;
161 187427 : }
162 :
163 : /* Return language mask for option parsing. */
164 : unsigned int
165 6624325 : c_common_option_lang_mask (void)
166 : {
167 6624325 : static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX};
168 :
169 6624325 : return lang_flags[c_language];
170 : }
171 :
172 : /* Diagnostic finalizer for C/C++/Objective-C/Objective-C++. */
173 : static void
174 339995 : c_diagnostic_text_finalizer (diagnostics::text_sink &text_output,
175 : const diagnostics::diagnostic_info *diagnostic,
176 : enum diagnostics::kind)
177 : {
178 339995 : pretty_printer *const pp = text_output.get_printer ();
179 339995 : char *saved_prefix = pp_take_prefix (pp);
180 339995 : pp_set_prefix (pp, text_output.build_indent_prefix (false));
181 339995 : pp_newline (pp);
182 339995 : diagnostic_show_locus (&text_output.get_context (),
183 339995 : text_output.get_source_printing_options (),
184 339995 : diagnostic->m_richloc, diagnostic->m_kind, pp);
185 : /* By default print macro expansion contexts in the diagnostic
186 : finalizer -- for tokens resulting from macro expansion. */
187 339995 : diagnostics::virt_loc_aware_text_finalizer (text_output, diagnostic);
188 339995 : pp_set_prefix (pp, saved_prefix);
189 339995 : pp_flush (pp);
190 339995 : }
191 :
192 : /* Common default settings for diagnostics. */
193 : void
194 216649 : c_common_diagnostics_set_defaults (diagnostics::context *context)
195 : {
196 216649 : diagnostics::text_finalizer (context) = c_diagnostic_text_finalizer;
197 216649 : context->set_permissive_option (OPT_fpermissive);
198 216649 : }
199 :
200 : /* Input charset configuration for diagnostics. */
201 : static const char *
202 65917 : c_common_input_charset_cb (const char * /*filename*/)
203 : {
204 65917 : const char *cs = cpp_opts->input_charset;
205 65917 : return cpp_input_conversion_is_trivial (cs) ? nullptr : cs;
206 : }
207 :
208 : /* Whether options from all C-family languages should be accepted
209 : quietly. */
210 : static bool accept_all_c_family_options = false;
211 :
212 : /* Return whether to complain about a wrong-language option. */
213 : bool
214 293 : c_common_complain_wrong_lang_p (const struct cl_option *option)
215 : {
216 293 : if (accept_all_c_family_options
217 6 : && (option->flags & c_family_lang_mask))
218 6 : return false;
219 :
220 : return true;
221 : }
222 :
223 : /* Initialize options structure OPTS. */
224 : void
225 47994628 : c_common_init_options_struct (struct gcc_options *opts)
226 : {
227 47994628 : opts->x_flag_exceptions = c_dialect_cxx ();
228 47994628 : opts->x_warn_pointer_arith = c_dialect_cxx ();
229 47994628 : opts->x_warn_write_strings = c_dialect_cxx ();
230 47994628 : opts->x_flag_warn_unused_result = true;
231 :
232 : /* By default, C99-like requirements for complex multiply and divide. */
233 47994628 : opts->x_flag_complex_method = 2;
234 47994628 : }
235 :
236 : /* Common initialization before calling option handlers. */
237 : void
238 216649 : c_common_init_options (unsigned int decoded_options_count,
239 : struct cl_decoded_option *decoded_options)
240 : {
241 216649 : unsigned int i;
242 216649 : struct cpp_callbacks *cb;
243 :
244 216649 : g_string_concat_db
245 216649 : = new (ggc_alloc <string_concat_db> ()) string_concat_db ();
246 :
247 333533 : parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX : CLK_GNUC89,
248 : ident_hash, line_table, ident_hash_extra);
249 216649 : cb = cpp_get_callbacks (parse_in);
250 216649 : cb->diagnostic = c_cpp_diagnostic;
251 :
252 216649 : cpp_opts = cpp_get_options (parse_in);
253 216649 : cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
254 216649 : cpp_opts->objc = c_dialect_objc ();
255 216649 : cpp_opts->deps.modules = true;
256 :
257 : /* Reset to avoid warnings on internal definitions. We set it just
258 : before passing on command-line options to cpplib. */
259 216649 : cpp_opts->warn_dollars = 0;
260 :
261 216649 : deferred_opts = XNEWVEC (struct deferred_opt, decoded_options_count);
262 :
263 216649 : if (c_language == clk_c)
264 : {
265 : /* The default for C is gnu23. */
266 116884 : set_std_c23 (false /* ISO */);
267 :
268 : /* If preprocessing assembly language, accept any of the C-family
269 : front end options since the driver may pass them through. */
270 2981467 : for (i = 1; i < decoded_options_count; i++)
271 2748679 : if (decoded_options[i].opt_index == OPT_lang_asm)
272 : {
273 980 : accept_all_c_family_options = true;
274 980 : break;
275 : }
276 : }
277 :
278 : /* Set C++ standard to C++20 if not specified on the command line. */
279 216649 : if (c_dialect_cxx ())
280 99765 : set_std_cxx20 (/*ISO*/false);
281 :
282 216649 : global_dc->get_source_printing_options ().colorize_source_p = true;
283 216649 : }
284 :
285 : /* Handle switch SCODE with argument ARG. VALUE is true, unless no-
286 : form of an -f or -W option was given. Returns false if the switch was
287 : invalid, true if valid. Use HANDLERS in recursive handle_option calls. */
288 : bool
289 3413799 : c_common_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value,
290 : int kind, location_t loc,
291 : const struct cl_option_handlers *handlers)
292 : {
293 3413799 : const struct cl_option *option = &cl_options[scode];
294 3413799 : enum opt_code code = (enum opt_code) scode;
295 3413799 : bool result = true;
296 :
297 : /* Prevent resetting the language standard to a C dialect when the driver
298 : has already determined that we're looking at assembler input. */
299 3413799 : bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM);
300 :
301 3413799 : switch (code)
302 : {
303 1473040 : default:
304 1473040 : if (cl_options[code].flags & c_family_lang_mask)
305 : {
306 1473040 : if ((option->flags & CL_TARGET)
307 1473040 : && ! targetcm.handle_c_option (scode, arg, value))
308 : result = false;
309 : break;
310 : }
311 : result = false;
312 : break;
313 :
314 474 : case OPT__output_pch:
315 474 : pch_file = arg;
316 474 : break;
317 :
318 10 : case OPT_A:
319 10 : defer_opt (code, arg);
320 10 : break;
321 :
322 13 : case OPT_C:
323 13 : cpp_opts->discard_comments = 0;
324 13 : break;
325 :
326 11 : case OPT_CC:
327 11 : cpp_opts->discard_comments = 0;
328 11 : cpp_opts->discard_comments_in_macro_exp = 0;
329 11 : break;
330 :
331 172048 : case OPT_D:
332 172048 : defer_opt (code, arg);
333 172048 : break;
334 :
335 25 : case OPT_H:
336 25 : cpp_opts->print_include_names = 1;
337 25 : break;
338 :
339 : case OPT_F:
340 : TARGET_OPTF (xstrdup (arg));
341 : break;
342 :
343 564642 : case OPT_I:
344 564642 : if (strcmp (arg, "-"))
345 564642 : add_path (xstrdup (arg), INC_BRACKET, 0, true);
346 : else
347 : {
348 0 : if (quote_chain_split)
349 0 : error ("%<-I-%> specified twice");
350 0 : quote_chain_split = true;
351 0 : split_quote_chain ();
352 0 : inform (input_location, "obsolete option %<-I-%> used, "
353 : "please use %<-iquote%> instead");
354 : }
355 : break;
356 :
357 31 : case OPT_M:
358 31 : case OPT_MM:
359 : /* When doing dependencies with -M or -MM, suppress normal
360 : preprocessed output, but still do -dM etc. as software
361 : depends on this. Preprocessed output does occur if -MD, -MMD
362 : or environment var dependency generation is used. */
363 31 : cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM : DEPS_USER);
364 31 : flag_no_output = 1;
365 31 : break;
366 :
367 5892 : case OPT_MD:
368 5892 : case OPT_MMD:
369 5892 : cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM : DEPS_USER);
370 5892 : cpp_opts->deps.need_preprocessor_output = true;
371 5892 : deps_file = arg;
372 5892 : break;
373 :
374 51 : case OPT_fdeps_format_:
375 : /* https://wg21.link/p1689r5 */
376 51 : if (!strcmp (arg, "p1689r5"))
377 48 : cpp_opts->deps.fdeps_format = FDEPS_FMT_P1689R5;
378 : else
379 3 : error ("%<-fdeps-format=%> unknown format %qs", arg);
380 : break;
381 :
382 63 : case OPT_fdeps_file_:
383 63 : deps_seen = true;
384 63 : fdeps_file = arg;
385 63 : break;
386 :
387 63 : case OPT_fdeps_target_:
388 63 : deps_seen = true;
389 63 : defer_opt (code, arg);
390 63 : break;
391 :
392 5839 : case OPT_MF:
393 5839 : deps_seen = true;
394 5839 : deps_file = arg;
395 5839 : break;
396 :
397 6 : case OPT_MG:
398 6 : deps_seen = true;
399 6 : cpp_opts->deps.missing_files = true;
400 6 : break;
401 :
402 5821 : case OPT_MP:
403 5821 : deps_seen = true;
404 5821 : cpp_opts->deps.phony_targets = true;
405 5821 : break;
406 :
407 0 : case OPT_Mmodules:
408 : /* Do not set deps_seen, so the user can unconditionally turn
409 : this on or off. */
410 0 : cpp_opts->deps.modules = true;
411 0 : break;
412 :
413 3 : case OPT_Mno_modules:
414 : /* Do not set deps_seen, so the user can unconditionally turn
415 : this on or off. */
416 3 : cpp_opts->deps.modules = false;
417 3 : break;
418 :
419 5888 : case OPT_MQ:
420 5888 : case OPT_MT:
421 5888 : deps_seen = true;
422 5888 : defer_opt (code, arg);
423 5888 : break;
424 :
425 43 : case OPT_P:
426 43 : flag_no_line_commands = 1;
427 43 : break;
428 :
429 60 : case OPT_U:
430 60 : defer_opt (code, arg);
431 60 : break;
432 :
433 11034 : case OPT_Wall:
434 : /* ??? Don't add new options here. Use LangEnabledBy in c.opt. */
435 :
436 11034 : cpp_opts->warn_num_sign_change = value;
437 11034 : break;
438 :
439 11124 : case OPT_Wunknown_pragmas:
440 : /* Set to greater than 1, so that even unknown pragmas in
441 : system headers will be warned about. */
442 : /* ??? There is no way to handle this automatically for now. */
443 11124 : warn_unknown_pragmas = value * 2;
444 11124 : break;
445 :
446 3972 : case OPT_ansi:
447 3972 : if (!c_dialect_cxx ())
448 3826 : set_std_c89 (false, true);
449 : else
450 146 : set_std_cxx98 (true);
451 : break;
452 :
453 1634 : case OPT_d:
454 1634 : handle_OPT_d (arg);
455 1634 : break;
456 :
457 12385 : case OPT_Wabi_:
458 12385 : warn_abi = true;
459 12385 : if (value == 1)
460 : {
461 0 : warning (0, "%<-Wabi=1%> is not supported, using =2");
462 0 : value = 2;
463 : }
464 12385 : warn_abi_version = value;
465 12385 : break;
466 :
467 18 : case OPT_fcanonical_system_headers:
468 18 : cpp_opts->canonical_system_headers = value;
469 18 : break;
470 :
471 12 : case OPT_fcond_mismatch:
472 12 : if (!c_dialect_cxx ())
473 : {
474 12 : flag_cond_mismatch = value;
475 12 : break;
476 : }
477 0 : warning (0, "switch %qs is no longer supported", option->opt_text);
478 0 : break;
479 :
480 308 : case OPT_fbuiltin_:
481 308 : if (value)
482 : result = false;
483 : else
484 308 : disable_builtin_function (arg);
485 : break;
486 :
487 1101 : case OPT_fdirectives_only:
488 1101 : cpp_opts->directives_only = value;
489 1101 : break;
490 :
491 7 : case OPT_fdollars_in_identifiers:
492 7 : cpp_opts->dollars_in_ident = value;
493 7 : break;
494 :
495 8 : case OPT_fmacro_prefix_map_:
496 8 : add_macro_prefix_map (arg);
497 8 : break;
498 :
499 663 : case OPT_ffreestanding:
500 663 : value = !value;
501 : /* Fall through. */
502 671 : case OPT_fhosted:
503 671 : flag_hosted = value;
504 671 : flag_no_builtin = !value;
505 671 : break;
506 :
507 0 : case OPT_fconstant_string_class_:
508 0 : constant_string_class_name = arg;
509 0 : break;
510 :
511 0 : case OPT_fextended_identifiers:
512 0 : cpp_opts->extended_identifiers = value;
513 0 : break;
514 :
515 4 : case OPT_fmax_include_depth_:
516 4 : cpp_opts->max_include_depth = value;
517 4 : break;
518 :
519 4 : case OPT_foperator_names:
520 4 : cpp_opts->operator_names = value;
521 4 : break;
522 :
523 0 : case OPT_fpch_deps:
524 0 : cpp_opts->restore_pch_deps = value;
525 0 : break;
526 :
527 485 : case OPT_fpch_preprocess:
528 485 : flag_pch_preprocess = value;
529 485 : break;
530 :
531 1152 : case OPT_fpermissive:
532 1152 : flag_permissive = value;
533 1152 : global_dc->m_permissive = value;
534 1152 : break;
535 :
536 537 : case OPT_fpreprocessed:
537 537 : cpp_opts->preprocessed = value;
538 537 : break;
539 :
540 2 : case OPT_fdebug_cpp:
541 2 : cpp_opts->debug = value;
542 2 : break;
543 :
544 1 : case OPT_ftrack_macro_expansion:
545 1 : if (value)
546 0 : value = 2;
547 : /* Fall Through. */
548 :
549 483 : case OPT_ftrack_macro_expansion_:
550 483 : if (arg && *arg != '\0')
551 482 : cpp_opts->track_macro_expansion = value;
552 : else
553 1 : cpp_opts->track_macro_expansion = 2;
554 : break;
555 :
556 125 : case OPT_fexec_charset_:
557 125 : cpp_opts->narrow_charset = arg;
558 125 : break;
559 :
560 2 : case OPT_fwide_exec_charset_:
561 2 : cpp_opts->wide_charset = arg;
562 2 : break;
563 :
564 106 : case OPT_finput_charset_:
565 106 : cpp_opts->input_charset = arg;
566 106 : cpp_opts->cpp_input_charset_explicit = 1;
567 106 : break;
568 :
569 29 : case OPT_ftemplate_depth_:
570 29 : max_tinst_depth = value;
571 29 : break;
572 :
573 21 : case OPT_fvisibility_inlines_hidden:
574 21 : visibility_options.inlines_hidden = value;
575 21 : break;
576 :
577 22 : case OPT_femit_struct_debug_baseonly:
578 22 : set_struct_debug_option (&global_options, loc, "base");
579 22 : break;
580 :
581 8 : case OPT_femit_struct_debug_reduced:
582 8 : set_struct_debug_option (&global_options, loc,
583 : "dir:ord:sys,dir:gen:any,ind:base");
584 8 : break;
585 :
586 12 : case OPT_femit_struct_debug_detailed_:
587 12 : set_struct_debug_option (&global_options, loc, arg);
588 12 : break;
589 :
590 17 : case OPT_fext_numeric_literals:
591 17 : cpp_opts->ext_numeric_literals = value;
592 17 : break;
593 :
594 4 : case OPT_idirafter:
595 4 : add_path (xstrdup (arg), INC_AFTER, 0, true);
596 4 : break;
597 :
598 9358 : case OPT_imacros:
599 9358 : case OPT_include:
600 9358 : defer_opt (code, arg);
601 9358 : break;
602 :
603 5366 : case OPT_imultilib:
604 5366 : imultilib = arg;
605 5366 : break;
606 :
607 213304 : case OPT_iprefix:
608 213304 : iprefix = arg;
609 213304 : break;
610 :
611 2918 : case OPT_iquote:
612 2918 : add_path (xstrdup (arg), INC_QUOTE, 0, true);
613 2918 : break;
614 :
615 0 : case OPT_isysroot:
616 0 : sysroot = arg;
617 0 : break;
618 :
619 476749 : case OPT_isystem:
620 476749 : add_path (xstrdup (arg), INC_SYSTEM, 0, true);
621 476749 : break;
622 :
623 0 : case OPT_iwithprefix:
624 0 : add_prefixed_path (arg, INC_SYSTEM);
625 0 : break;
626 :
627 0 : case OPT_iwithprefixbefore:
628 0 : add_prefixed_path (arg, INC_BRACKET);
629 0 : break;
630 :
631 88 : case OPT__embed_dir_:
632 88 : add_path (xstrdup (arg), INC_EMBED, 0, true);
633 88 : break;
634 :
635 980 : case OPT_lang_asm:
636 980 : cpp_set_lang (parse_in, CLK_ASM);
637 980 : cpp_opts->dollars_in_ident = false;
638 980 : break;
639 :
640 60 : case OPT_nostdinc:
641 60 : std_inc = false;
642 60 : break;
643 :
644 111370 : case OPT_nostdinc__:
645 111370 : std_cxx_inc = false;
646 111370 : break;
647 :
648 215904 : case OPT_o:
649 215904 : if (!out_fname)
650 215904 : out_fname = arg;
651 : else
652 0 : error ("output filename specified twice");
653 : break;
654 :
655 0 : case OPT_print_objc_runtime_info:
656 0 : print_struct_values = 1;
657 0 : break;
658 :
659 2 : case OPT_remap:
660 2 : cpp_opts->remap = 1;
661 2 : break;
662 :
663 14119 : case OPT_std_c__98:
664 14119 : case OPT_std_gnu__98:
665 14119 : if (!preprocessing_asm_p)
666 14119 : set_std_cxx98 (code == OPT_std_c__98 /* ISO */);
667 : break;
668 :
669 5709 : case OPT_std_c__11:
670 5709 : case OPT_std_gnu__11:
671 5709 : if (!preprocessing_asm_p)
672 5709 : set_std_cxx11 (code == OPT_std_c__11 /* ISO */);
673 : break;
674 :
675 1299 : case OPT_std_c__14:
676 1299 : case OPT_std_gnu__14:
677 1299 : if (!preprocessing_asm_p)
678 1299 : set_std_cxx14 (code == OPT_std_c__14 /* ISO */);
679 : break;
680 :
681 4208 : case OPT_std_c__17:
682 4208 : case OPT_std_gnu__17:
683 4208 : if (!preprocessing_asm_p)
684 4208 : set_std_cxx17 (code == OPT_std_c__17 /* ISO */);
685 : break;
686 :
687 32182 : case OPT_std_c__20:
688 32182 : case OPT_std_gnu__20:
689 32182 : if (!preprocessing_asm_p)
690 32182 : set_std_cxx20 (code == OPT_std_c__20 /* ISO */);
691 : break;
692 :
693 2144 : case OPT_std_c__23:
694 2144 : case OPT_std_gnu__23:
695 2144 : if (!preprocessing_asm_p)
696 2144 : set_std_cxx23 (code == OPT_std_c__23 /* ISO */);
697 : break;
698 :
699 1632 : case OPT_std_c__26:
700 1632 : case OPT_std_gnu__26:
701 1632 : if (!preprocessing_asm_p)
702 1632 : set_std_cxx26 (code == OPT_std_c__26 /* ISO */);
703 : break;
704 :
705 23249 : case OPT_std_c__29:
706 23249 : case OPT_std_gnu__29:
707 23249 : if (!preprocessing_asm_p)
708 23249 : set_std_cxx29 (code == OPT_std_c__29 /* ISO */);
709 : break;
710 :
711 191 : case OPT_std_c90:
712 191 : case OPT_std_iso9899_199409:
713 191 : if (!preprocessing_asm_p)
714 191 : set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */);
715 : break;
716 :
717 2953 : case OPT_std_gnu90:
718 2953 : if (!preprocessing_asm_p)
719 2953 : set_std_c89 (false /* c94 */, false /* ISO */);
720 : break;
721 :
722 581 : case OPT_std_c99:
723 581 : if (!preprocessing_asm_p)
724 580 : set_std_c99 (true /* ISO */);
725 : break;
726 :
727 616 : case OPT_std_gnu99:
728 616 : if (!preprocessing_asm_p)
729 616 : set_std_c99 (false /* ISO */);
730 : break;
731 :
732 514 : case OPT_std_c11:
733 514 : if (!preprocessing_asm_p)
734 514 : set_std_c11 (true /* ISO */);
735 : break;
736 :
737 3718 : case OPT_std_gnu11:
738 3718 : if (!preprocessing_asm_p)
739 3718 : set_std_c11 (false /* ISO */);
740 : break;
741 :
742 42 : case OPT_std_c17:
743 42 : if (!preprocessing_asm_p)
744 42 : set_std_c17 (true /* ISO */);
745 : break;
746 :
747 777 : case OPT_std_gnu17:
748 777 : if (!preprocessing_asm_p)
749 777 : set_std_c17 (false /* ISO */);
750 : break;
751 :
752 908 : case OPT_std_c23:
753 908 : if (!preprocessing_asm_p)
754 908 : set_std_c23 (true /* ISO */);
755 : break;
756 :
757 205 : case OPT_std_gnu23:
758 205 : if (!preprocessing_asm_p)
759 205 : set_std_c23 (false /* ISO */);
760 : break;
761 :
762 204 : case OPT_std_c2y:
763 204 : if (!preprocessing_asm_p)
764 204 : set_std_c2y (true /* ISO */);
765 : break;
766 :
767 11 : case OPT_std_gnu2y:
768 11 : if (!preprocessing_asm_p)
769 11 : set_std_c2y (false /* ISO */);
770 : break;
771 :
772 20 : case OPT_trigraphs:
773 20 : cpp_opts->trigraphs = 1;
774 20 : break;
775 :
776 2927 : case OPT_traditional_cpp:
777 2927 : cpp_opts->traditional = 1;
778 2927 : break;
779 :
780 0 : case OPT_fsearch_include_path:
781 0 : cpp_opts->main_search = CMS_user;
782 0 : break;
783 :
784 5 : case OPT_fsearch_include_path_:
785 5 : if (!strcmp (arg, "user"))
786 0 : cpp_opts->main_search = CMS_user;
787 5 : else if (!strcmp (arg, "system"))
788 5 : cpp_opts->main_search = CMS_system;
789 : else
790 0 : error ("invalid argument %qs to %<-fsearch-include-path%>", arg);
791 : break;
792 :
793 176 : case OPT_v:
794 176 : verbose = true;
795 176 : break;
796 : }
797 :
798 3413799 : switch (c_language)
799 : {
800 1471563 : case clk_c:
801 1471563 : C_handle_option_auto (&global_options, &global_options_set,
802 : scode, arg, value,
803 : c_family_lang_mask, kind,
804 : loc, handlers, global_dc);
805 1471563 : break;
806 :
807 0 : case clk_objc:
808 0 : ObjC_handle_option_auto (&global_options, &global_options_set,
809 : scode, arg, value,
810 : c_family_lang_mask, kind,
811 : loc, handlers, global_dc);
812 0 : break;
813 :
814 1942236 : case clk_cxx:
815 1942236 : CXX_handle_option_auto (&global_options, &global_options_set,
816 : scode, arg, value,
817 : c_family_lang_mask, kind,
818 : loc, handlers, global_dc);
819 1942236 : break;
820 :
821 0 : case clk_objcxx:
822 0 : ObjCXX_handle_option_auto (&global_options, &global_options_set,
823 : scode, arg, value,
824 : c_family_lang_mask, kind,
825 : loc, handlers, global_dc);
826 0 : break;
827 :
828 0 : default:
829 0 : gcc_unreachable ();
830 : }
831 :
832 3413799 : cpp_handle_option_auto (&global_options, scode, cpp_opts);
833 3413799 : return result;
834 : }
835 :
836 : /* Default implementation of TARGET_HANDLE_C_OPTION. */
837 :
838 : bool
839 0 : default_handle_c_option (size_t code ATTRIBUTE_UNUSED,
840 : const char *arg ATTRIBUTE_UNUSED,
841 : int value ATTRIBUTE_UNUSED)
842 : {
843 0 : return false;
844 : }
845 :
846 : /* Post-switch processing. */
847 : bool
848 216533 : c_common_post_options (const char **pfilename)
849 : {
850 : /* Canonicalize the input and output filenames. */
851 216533 : if (in_fnames == NULL)
852 : {
853 0 : in_fnames = XNEWVEC (const char *, 1);
854 0 : in_fnames[0] = "";
855 : }
856 216533 : else if (strcmp (in_fnames[0], "-") == 0)
857 : {
858 407 : if (pch_file)
859 0 : error ("cannot use %<-%> as input filename for a precompiled header");
860 :
861 407 : in_fnames[0] = "";
862 : }
863 :
864 216533 : if (out_fname == NULL || !strcmp (out_fname, "-"))
865 745 : out_fname = "";
866 :
867 216533 : if (cpp_opts->deps.style == DEPS_NONE)
868 210610 : check_deps_environment_vars ();
869 :
870 216533 : handle_deferred_opts ();
871 :
872 216533 : sanitize_cpp_opts ();
873 :
874 : /* Don't register include chains if under -fpreprocessed since we might not
875 : have correct sysroot this mode, and this may cause file permission
876 : issue. */
877 216533 : if (!cpp_opts->preprocessed)
878 215996 : register_include_chains (parse_in, sysroot, iprefix, imultilib,
879 215996 : std_inc, std_cxx_inc && c_dialect_cxx (), verbose);
880 :
881 : #ifdef C_COMMON_OVERRIDE_OPTIONS
882 : /* Some machines may reject certain combinations of C
883 : language-specific options. */
884 : C_COMMON_OVERRIDE_OPTIONS;
885 : #endif
886 :
887 216533 : if (flag_excess_precision == EXCESS_PRECISION_DEFAULT)
888 370070 : flag_excess_precision = (flag_iso ? EXCESS_PRECISION_STANDARD
889 : : EXCESS_PRECISION_FAST);
890 :
891 : /* ISO C restricts floating-point expression contraction to within
892 : source-language expressions (-ffp-contract=on, currently an alias
893 : for -ffp-contract=off). */
894 216533 : if (flag_iso
895 59772 : && !c_dialect_cxx ()
896 6253 : && (OPTION_SET_P (flag_fp_contract_mode)
897 : == (enum fp_contract_mode) 0)
898 6253 : && flag_unsafe_math_optimizations == 0)
899 6248 : flag_fp_contract_mode = FP_CONTRACT_OFF;
900 :
901 : /* C language modes before C99 enable -fpermissive by default, but
902 : only if -pedantic-errors is not specified. Also treat
903 : -fno-permissive as a subset of -pedantic-errors that does not
904 : reject certain GNU extensions also present the defaults for later
905 : language modes. */
906 216533 : if (!c_dialect_cxx ()
907 116769 : && !flag_isoc99
908 6958 : && !global_dc->m_pedantic_errors
909 5938 : && !OPTION_SET_P (flag_permissive))
910 : {
911 5937 : flag_permissive = 1;
912 5937 : global_dc->m_permissive = 1;
913 : }
914 :
915 : /* If we are compiling C, and we are outside of a standards mode,
916 : we can permit the new values from ISO/IEC TS 18661-3 for
917 : FLT_EVAL_METHOD. Otherwise, we must restrict the possible values to
918 : the set specified in ISO C99/C11. */
919 216533 : if (!flag_iso
920 156761 : && !c_dialect_cxx ()
921 110516 : && (OPTION_SET_P (flag_permitted_flt_eval_methods)
922 : == PERMITTED_FLT_EVAL_METHODS_DEFAULT))
923 110515 : flag_permitted_flt_eval_methods = PERMITTED_FLT_EVAL_METHODS_TS_18661;
924 : else
925 106018 : flag_permitted_flt_eval_methods = PERMITTED_FLT_EVAL_METHODS_C11;
926 :
927 216533 : if (cxx_dialect >= cxx26)
928 24835 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
929 : flag_auto_var_init, AUTO_INIT_CXX26);
930 :
931 : /* The -Wtrivial-auto-var-init warning is useless for C++, where we always
932 : add .DEFERRED_INIT calls when some (vacuous) initializers are bypassed
933 : through jumps from switch condition to case/default label. */
934 216533 : if (c_dialect_cxx ())
935 99764 : warn_trivial_auto_var_init = 0;
936 :
937 : /* C23 Annex F does not permit certain built-in functions to raise
938 : "inexact". */
939 216533 : if (flag_isoc23)
940 103564 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
941 : flag_fp_int_builtin_inexact, 0);
942 :
943 : /* By default we use C99 inline semantics in GNU99 or C99 mode. C99
944 : inline semantics are not supported in GNU89 or C89 mode. */
945 216533 : if (flag_gnu89_inline == -1)
946 216089 : flag_gnu89_inline = !flag_isoc99;
947 444 : else if (!flag_gnu89_inline && !flag_isoc99)
948 1 : error ("%<-fno-gnu89-inline%> is only supported in GNU99 or C99 mode");
949 :
950 : /* Default to ObjC sjlj exception handling if NeXT runtime < v2. */
951 216533 : if (flag_objc_sjlj_exceptions < 0)
952 433066 : flag_objc_sjlj_exceptions = (flag_next_runtime && flag_objc_abi < 2);
953 216533 : if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
954 0 : flag_exceptions = 1;
955 :
956 : /* If -ffreestanding, -fno-hosted or -fno-builtin then disable
957 : pattern recognition. */
958 216533 : if (flag_no_builtin)
959 782 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
960 : flag_tree_loop_distribute_patterns, 0);
961 :
962 : /* -Woverlength-strings is off by default, but is enabled by -Wpedantic.
963 : It is never enabled in C++, as the minimum limit is not normative
964 : in that standard. */
965 216533 : if (c_dialect_cxx ())
966 99764 : warn_overlength_strings = 0;
967 :
968 : /* Wmain is enabled by default in C++ but not in C. */
969 : /* Wmain is disabled by default for -ffreestanding (!flag_hosted),
970 : even if -Wall or -Wpedantic was given (warn_main will be 2 if set
971 : by -Wall, 1 if set by -Wmain). */
972 216533 : if (warn_main == -1)
973 263584 : warn_main = (c_dialect_cxx () && flag_hosted) ? 1 : 0;
974 58345 : else if (warn_main == 2)
975 57994 : warn_main = flag_hosted ? 1 : 0;
976 :
977 : /* In C, -Wall and -Wc++-compat enable -Wenum-compare; if it has not
978 : yet been set, it is disabled by default. In C++, it is enabled
979 : by default. */
980 216533 : if (warn_enum_compare == -1)
981 206923 : warn_enum_compare = c_dialect_cxx () ? 1 : 0;
982 :
983 : /* For C++26 default to -Wkeyword-macro if -Wpedantic. */
984 216533 : if (cxx_dialect >= cxx26 && pedantic)
985 : {
986 15948 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
987 : warn_keyword_macro, 1);
988 15948 : if (warn_keyword_macro)
989 15947 : cpp_opts->cpp_warn_keyword_macro = warn_keyword_macro;
990 : }
991 :
992 : /* -Wpacked-bitfield-compat is on by default for the C languages. The
993 : warning is issued in stor-layout.cc which is not part of the front-end so
994 : we need to selectively turn it on here. */
995 216533 : if (warn_packed_bitfield_compat == -1)
996 216525 : warn_packed_bitfield_compat = 1;
997 :
998 : /* Special format checking options don't work without -Wformat; warn if
999 : they are used. */
1000 216533 : if (!warn_format)
1001 : {
1002 205152 : warning (OPT_Wformat_y2k,
1003 : "%<-Wformat-y2k%> ignored without %<-Wformat%>");
1004 205152 : warning (OPT_Wformat_extra_args,
1005 : "%<-Wformat-extra-args%> ignored without %<-Wformat%>");
1006 205152 : warning (OPT_Wformat_zero_length,
1007 : "%<-Wformat-zero-length%> ignored without %<-Wformat%>");
1008 205152 : warning (OPT_Wformat_nonliteral,
1009 : "%<-Wformat-nonliteral%> ignored without %<-Wformat%>");
1010 205152 : warning (OPT_Wformat_contains_nul,
1011 : "%<-Wformat-contains-nul%> ignored without %<-Wformat%>");
1012 205152 : warning (OPT_Wformat_security,
1013 : "%<-Wformat-security%> ignored without %<-Wformat%>");
1014 : }
1015 :
1016 : /* -Wimplicit-function-declaration is enabled by default for C99. */
1017 216533 : if (warn_implicit_function_declaration == -1)
1018 208089 : warn_implicit_function_declaration = flag_isoc99;
1019 :
1020 : /* -Wimplicit-int is enabled by default for C99. */
1021 216533 : if (warn_implicit_int == -1)
1022 208146 : warn_implicit_int = flag_isoc99;
1023 :
1024 : /* -Wold-style-definition is enabled by default for C23. */
1025 216533 : if (warn_old_style_definition == -1)
1026 212236 : warn_old_style_definition = flag_isoc23;
1027 :
1028 : /* -Wshift-overflow is enabled by default in C99 and C++11 modes. */
1029 216533 : if (warn_shift_overflow == -1)
1030 411810 : warn_shift_overflow = cxx_dialect >= cxx11 || flag_isoc99;
1031 :
1032 : /* -Wmissing-parameter-name is enabled by -pedantic before C23,
1033 : and for -Wc11-c23-compat. */
1034 216533 : if (warn_missing_parameter_name == -1)
1035 216530 : warn_missing_parameter_name
1036 49643 : = ((pedantic && !flag_isoc23 && warn_c11_c23_compat != 0)
1037 266218 : || warn_c11_c23_compat > 0);
1038 :
1039 : /* Likewise for -Wfree-labels. */
1040 216533 : if (warn_free_labels == -1)
1041 49643 : warn_free_labels = ((pedantic && !flag_isoc23 && warn_c11_c23_compat != 0)
1042 266218 : || warn_c11_c23_compat > 0);
1043 :
1044 216533 : if (warn_deprecated_non_prototype == -1)
1045 216528 : warn_deprecated_non_prototype = warn_c11_c23_compat > 0;
1046 :
1047 : /* -Wshift-negative-value is enabled by -Wextra in C99 and C++11 to C++17
1048 : modes. */
1049 216533 : if (warn_shift_negative_value == -1)
1050 433026 : warn_shift_negative_value = (extra_warnings
1051 7866 : && (cxx_dialect >= cxx11 || flag_isoc99)
1052 433390 : && cxx_dialect < cxx20);
1053 :
1054 : /* -Wregister is enabled by default in C++17. */
1055 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set, warn_register,
1056 : cxx_dialect >= cxx17);
1057 :
1058 : /* Explicit -Wdeprecated turns on warnings from later standards. */
1059 1694151 : auto deprecated_in = [&](enum cxx_dialect d)
1060 : {
1061 1477618 : if (OPTION_SET_P (warn_deprecated)) return !!warn_deprecated;
1062 1476130 : return (warn_deprecated && cxx_dialect >= d);
1063 : };
1064 :
1065 : /* -Wcomma-subscript is enabled by default in C++20. */
1066 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1067 : warn_comma_subscript,
1068 : cxx_dialect >= cxx23
1069 : || deprecated_in (cxx20));
1070 :
1071 : /* -Wvolatile is enabled by default in C++20. */
1072 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set, warn_volatile,
1073 : deprecated_in (cxx20));
1074 :
1075 : /* -Wdeprecated-enum-enum-conversion is enabled by default in C++20. */
1076 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1077 : warn_deprecated_enum_enum_conv,
1078 : deprecated_in (cxx20));
1079 :
1080 : /* -Wdeprecated-enum-float-conversion is enabled by default in C++20. */
1081 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1082 : warn_deprecated_enum_float_conv,
1083 : deprecated_in (cxx20));
1084 :
1085 : /* -Wdeprecated-literal-operator is enabled by default in C++23. */
1086 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1087 : warn_deprecated_literal_operator,
1088 : deprecated_in (cxx23));
1089 :
1090 : /* -Warray-compare is enabled by default in C++20. */
1091 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1092 : warn_array_compare,
1093 : warn_array_compare || deprecated_in (cxx20));
1094 :
1095 : /* -Wdeprecated-variadic-comma-omission is enabled by default in C++26. */
1096 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1097 : warn_deprecated_variadic_comma_omission,
1098 : deprecated_in (cxx26));
1099 :
1100 : /* -Wtemplate-id-cdtor is enabled by default in C++20. */
1101 292348 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1102 : warn_template_id_cdtor,
1103 : cxx_dialect >= cxx20 || warn_cxx20_compat);
1104 :
1105 : /* Declone C++ 'structors if -Os. */
1106 216533 : if (flag_declone_ctor_dtor == -1)
1107 216496 : flag_declone_ctor_dtor = optimize_size;
1108 :
1109 216533 : if (flag_abi_compat_version == 1)
1110 : {
1111 0 : warning (0, "%<-fabi-compat-version=1%> is not supported, using =2");
1112 0 : flag_abi_compat_version = 2;
1113 : }
1114 :
1115 : /* Change flag_abi_version to be the actual current ABI level, for the
1116 : benefit of c_cpp_builtins, and to make comparison simpler. */
1117 216533 : const int latest_abi_version = 21;
1118 : /* Possibly different for non-default ABI fixes within a release. */
1119 216533 : const int default_abi_version = latest_abi_version;
1120 : /* Generate compatibility aliases for ABI v18 (GCC 13) by default. */
1121 216533 : const int abi_compat_default = 18;
1122 :
1123 216533 : if (flag_abi_version > latest_abi_version)
1124 0 : warning (0, "%<-fabi-version=%d%> is not supported, using =%d",
1125 : flag_abi_version, latest_abi_version);
1126 :
1127 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1128 : flag_abi_version, default_abi_version);
1129 :
1130 : #define clamp(X) if (X == 0 || X > latest_abi_version) X = latest_abi_version
1131 216533 : clamp (flag_abi_version);
1132 : /* Don't clamp warn_abi_version, let it be 0 or out of bounds. */
1133 216533 : clamp (flag_abi_compat_version);
1134 : #undef clamp
1135 :
1136 : /* Default -Wabi= or -fabi-compat-version= from each other. */
1137 216533 : if (warn_abi_version == -1 && flag_abi_compat_version != -1)
1138 197 : warn_abi_version = flag_abi_compat_version;
1139 216336 : else if (flag_abi_compat_version == -1 && warn_abi_version != -1)
1140 12338 : flag_abi_compat_version = warn_abi_version;
1141 203998 : else if (warn_abi_version == -1 && flag_abi_compat_version == -1)
1142 : {
1143 203953 : warn_abi_version = 0;
1144 203953 : if (flag_abi_version == default_abi_version)
1145 203718 : flag_abi_compat_version = abi_compat_default;
1146 : else
1147 235 : flag_abi_compat_version = latest_abi_version;
1148 : }
1149 :
1150 : /* Allow warnings vs ABI versions beyond what we currently support. */
1151 216533 : if (warn_abi_version == 0)
1152 203968 : warn_abi_version = 1000;
1153 :
1154 : /* By default, enable the new inheriting constructor semantics along with ABI
1155 : 11. New and old should coexist fine, but it is a change in what
1156 : artificial symbols are generated. */
1157 432810 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1158 : flag_new_inheriting_ctors,
1159 : abi_version_at_least (11));
1160 :
1161 : /* For GCC 7, only enable DR150 resolution by default if -std=c++17. */
1162 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set, flag_new_ttp,
1163 : cxx_dialect >= cxx17);
1164 :
1165 : /* C++11 guarantees forward progress. */
1166 407480 : SET_OPTION_IF_UNSET (&global_options, &global_options_set, flag_finite_loops,
1167 : optimize >= 2 && cxx_dialect >= cxx11);
1168 :
1169 : /* It's OK to discard calls to pure/const functions that might throw. */
1170 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1171 : flag_delete_dead_exceptions, true);
1172 :
1173 216533 : if (cxx_dialect >= cxx11)
1174 : {
1175 : /* If we're allowing C++0x constructs, don't warn about C++98
1176 : identifiers which are keywords in C++0x. */
1177 85569 : warn_cxx11_compat = 0;
1178 85569 : cpp_opts->cpp_warn_cxx11_compat = 0;
1179 :
1180 85569 : if (warn_narrowing == -1)
1181 83359 : warn_narrowing = 1;
1182 :
1183 : /* Unless -f{,no-}ext-numeric-literals has been used explicitly,
1184 : for -std=c++{11,14,17,20,23,26} default to
1185 : -fno-ext-numeric-literals. */
1186 85569 : if (flag_iso && !OPTION_SET_P (flag_ext_numeric_literals))
1187 44630 : cpp_opts->ext_numeric_literals = 0;
1188 : }
1189 130964 : else if (warn_narrowing == -1)
1190 130470 : warn_narrowing = 0;
1191 :
1192 216533 : if (cxx_dialect >= cxx20)
1193 : {
1194 : /* Don't warn about C++20 compatibility changes in C++20 or later. */
1195 74391 : warn_cxx20_compat = 0;
1196 74391 : cpp_opts->cpp_warn_cxx20_compat = 0;
1197 : }
1198 216533 : if (cxx_dialect >= cxx26)
1199 : /* Don't warn about C++26 compatibility changes in C++26 or later. */
1200 24835 : warn_cxx26_compat = 0;
1201 :
1202 : /* C++17 has stricter evaluation order requirements; let's use some of them
1203 : for earlier C++ as well, so chaining works as expected. */
1204 216533 : if (c_dialect_cxx ()
1205 99764 : && flag_strong_eval_order == -1)
1206 120918 : flag_strong_eval_order = (cxx_dialect >= cxx17 ? 2 : 1);
1207 :
1208 216533 : if (flag_implicit_constexpr && cxx_dialect < cxx14)
1209 0 : flag_implicit_constexpr = false;
1210 :
1211 : /* Global sized deallocation is new in C++14. */
1212 216533 : if (flag_sized_deallocation == -1)
1213 216529 : flag_sized_deallocation = (cxx_dialect >= cxx14);
1214 :
1215 : /* Pedwarn about invalid constexpr functions before C++23. */
1216 216533 : if (warn_invalid_constexpr == -1)
1217 216513 : warn_invalid_constexpr = (cxx_dialect < cxx23);
1218 :
1219 : /* char8_t support is implicitly enabled in C++20 and C23. */
1220 216533 : if (flag_char8_t == -1)
1221 394323 : flag_char8_t = (cxx_dialect >= cxx20) || flag_isoc23;
1222 216533 : cpp_opts->unsigned_utf8char = flag_char8_t ? 1 : cpp_opts->unsigned_char;
1223 :
1224 216533 : cpp_opts->cpp_tabstop = global_dc->get_column_options ().m_tabstop;
1225 :
1226 216533 : if (flag_extern_tls_init)
1227 : {
1228 216531 : if (!TARGET_SUPPORTS_ALIASES || !SUPPORTS_WEAK)
1229 : {
1230 : /* Lazy TLS initialization for a variable in another TU requires
1231 : alias and weak reference support. */
1232 : if (flag_extern_tls_init > 0)
1233 : sorry ("external TLS initialization functions not supported "
1234 : "on this target");
1235 :
1236 : flag_extern_tls_init = 0;
1237 : }
1238 : else
1239 216531 : flag_extern_tls_init = 1;
1240 : }
1241 :
1242 : /* Enable by default only for C++ and C++ with ObjC extensions. */
1243 216533 : if (warn_return_type == -1 && c_dialect_cxx ())
1244 96202 : warn_return_type = 1;
1245 :
1246 : /* C++20 is the final version of concepts. We still use -fconcepts
1247 : to know when concepts are enabled. */
1248 216533 : if (cxx_dialect >= cxx20)
1249 74391 : flag_concepts = 1;
1250 :
1251 : /* Coroutines are also a C++20 feature. */
1252 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1253 : flag_coroutines, cxx_dialect >= cxx20);
1254 :
1255 : /* Enable lifetime extension of range based for temporaries for C++23. */
1256 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1257 : flag_range_for_ext_temps, cxx_dialect >= cxx23);
1258 :
1259 : /* Contracts are in C++26. */
1260 216533 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1261 : flag_contracts, cxx_dialect >= cxx26);
1262 :
1263 : /* EnabledBy unfortunately can't specify value to use if set and
1264 : LangEnabledBy can't specify multiple options with &&. For -Wunused
1265 : or -Wunused -Wextra we want these to default to 3 unless user specified
1266 : some other level explicitly. */
1267 216533 : if (warn_unused_but_set_parameter == 1)
1268 7710 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1269 : warn_unused_but_set_parameter, 3);
1270 216533 : if (warn_unused_but_set_variable == 1)
1271 10580 : SET_OPTION_IF_UNSET (&global_options, &global_options_set,
1272 : warn_unused_but_set_variable, 3);
1273 :
1274 : /* -fimmediate-escalation has no effect when immediate functions are not
1275 : supported. */
1276 216533 : if (flag_immediate_escalation && cxx_dialect < cxx20)
1277 142142 : flag_immediate_escalation = 0;
1278 :
1279 216533 : if (flag_reflection && cxx_dialect < cxx26)
1280 0 : error ("%<-freflection%> only supported with %<-std=c++26%> or "
1281 : "%<-std=gnu++26%>");
1282 :
1283 216533 : if (num_in_fnames > 1)
1284 0 : error ("too many filenames given; type %<%s %s%> for usage",
1285 : progname, "--help");
1286 :
1287 216533 : if (flag_preprocess_only)
1288 : {
1289 : /* Open the output now. We must do so even if flag_no_output is
1290 : on, because there may be other output than from the actual
1291 : preprocessing (e.g. from -dM). */
1292 7199 : if (out_fname[0] == '\0')
1293 745 : out_stream = stdout;
1294 : else
1295 6454 : out_stream = fopen (out_fname, "w");
1296 :
1297 7199 : if (out_stream == NULL)
1298 0 : fatal_error (input_location, "opening output file %s: %m", out_fname);
1299 :
1300 7199 : init_pp_output (out_stream);
1301 : }
1302 : else
1303 : {
1304 209334 : init_c_lex ();
1305 :
1306 : /* When writing a PCH file, avoid reading some other PCH file,
1307 : because the default address space slot then can't be used
1308 : for the output PCH file. */
1309 209334 : if (pch_file)
1310 : {
1311 474 : c_common_no_more_pch ();
1312 : /* Only -g0 and -gdwarf* are supported with PCH, for other
1313 : debug formats we warn here and refuse to load any PCH files. */
1314 474 : if (write_symbols != NO_DEBUG && write_symbols != DWARF2_DEBUG)
1315 0 : warning (OPT_Wdeprecated,
1316 : "the %qs debug info cannot be used with "
1317 : "pre-compiled headers",
1318 : debug_set_names (write_symbols & ~DWARF2_DEBUG));
1319 : /* Let libcpp know that the main file is a header so it won't
1320 : complain about things like #include_next and #pragma once. */
1321 474 : cpp_opts->main_search = CMS_header;
1322 : }
1323 208860 : else if (write_symbols != NO_DEBUG && write_symbols != DWARF2_DEBUG)
1324 500 : c_common_no_more_pch ();
1325 :
1326 : /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */
1327 209334 : input_location = UNKNOWN_LOCATION;
1328 : }
1329 :
1330 216533 : struct cpp_callbacks *cb = cpp_get_callbacks (parse_in);
1331 216533 : cb->file_change = cb_file_change;
1332 216533 : cb->dir_change = cb_dir_change;
1333 216533 : if (lang_hooks.preprocess_options)
1334 99764 : lang_hooks.preprocess_options (parse_in);
1335 216533 : cpp_post_options (parse_in);
1336 216533 : init_global_opts_from_cpp (&global_options, cpp_get_options (parse_in));
1337 : /* For C++23 and explicit -finput-charset=UTF-8, turn on -Winvalid-utf8
1338 : by default and make it a pedwarn unless -Wno-invalid-utf8. */
1339 216533 : if (cxx_dialect >= cxx23
1340 26976 : && cpp_opts->cpp_input_charset_explicit
1341 28 : && strcmp (cpp_opts->input_charset, "UTF-8") == 0
1342 26 : && (cpp_opts->cpp_warn_invalid_utf8
1343 21 : || !global_options_set.x_warn_invalid_utf8))
1344 : {
1345 23 : global_options.x_warn_invalid_utf8 = 1;
1346 34 : cpp_opts->cpp_warn_invalid_utf8 = cpp_opts->cpp_pedantic ? 2 : 1;
1347 : }
1348 :
1349 : /* Let diagnostics infrastructure know how to convert input files the same
1350 : way libcpp will do it, namely using the configured input charset and
1351 : skipping a UTF-8 BOM if present. */
1352 216533 : diagnostic_initialize_input_context (global_dc,
1353 : c_common_input_charset_cb, true);
1354 216533 : input_location = UNKNOWN_LOCATION;
1355 :
1356 433066 : *pfilename = this_input_filename
1357 433066 : = cpp_read_main_file (parse_in, in_fnames[0],
1358 : /* We'll inject preamble pieces if this is
1359 : not preprocessed. */
1360 216533 : !cpp_opts->preprocessed);
1361 :
1362 : /* Don't do any compilation or preprocessing if there is no input file. */
1363 216533 : if (this_input_filename == NULL)
1364 : {
1365 0 : errorcount++;
1366 0 : return false;
1367 : }
1368 :
1369 216533 : if (flag_working_directory
1370 42146 : && flag_preprocess_only && !flag_no_line_commands)
1371 2220 : pp_dir_change (parse_in, get_src_pwd ());
1372 :
1373 : /* Disable LTO output when outputting a precompiled header. */
1374 216533 : if (pch_file && flag_lto)
1375 : {
1376 0 : flag_lto = 0;
1377 0 : flag_generate_lto = 0;
1378 : }
1379 :
1380 216533 : return flag_preprocess_only;
1381 : }
1382 :
1383 : /* Front end initialization common to C, ObjC and C++. */
1384 : bool
1385 216307 : c_common_init (void)
1386 : {
1387 : /* Set up preprocessor arithmetic. Must be done after call to
1388 : c_common_nodes_and_builtins for type nodes to be good. */
1389 216307 : cpp_opts->precision = TYPE_PRECISION (intmax_type_node);
1390 216307 : cpp_opts->char_precision = TYPE_PRECISION (char_type_node);
1391 216307 : cpp_opts->int_precision = TYPE_PRECISION (integer_type_node);
1392 216307 : cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node);
1393 216307 : cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node);
1394 216307 : cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN;
1395 :
1396 : /* This can't happen until after wchar_precision and bytes_big_endian
1397 : are known. */
1398 216307 : cpp_init_iconv (parse_in);
1399 :
1400 216307 : if (version_flag)
1401 : {
1402 173 : int i;
1403 173 : fputs ("Compiler executable checksum: ", stderr);
1404 3114 : for (i = 0; i < 16; i++)
1405 2768 : fprintf (stderr, "%02x", executable_checksum[i]);
1406 173 : putc ('\n', stderr);
1407 : }
1408 :
1409 : /* Has to wait until now so that cpplib has its hash table. */
1410 216307 : init_pragma ();
1411 :
1412 216307 : if (flag_preprocess_only)
1413 : {
1414 7194 : c_init_preprocess ();
1415 7194 : c_finish_options ();
1416 7194 : preprocess_file (parse_in);
1417 7194 : return false;
1418 : }
1419 :
1420 : return true;
1421 : }
1422 :
1423 : /* Initialize the integrated preprocessor after debug output has been
1424 : initialized; loop over each input file. */
1425 : void
1426 209113 : c_common_parse_file (void)
1427 : {
1428 209113 : auto dumps = g->get_dumps ();
1429 209113 : for (unsigned int i = 0;;)
1430 : {
1431 209113 : c_finish_options ();
1432 : /* Open the dump file to use for the original dump output
1433 : here, to be used during parsing for the current file. */
1434 209113 : dumps->dump_start (TDI_original, &dump_flags);
1435 209113 : pch_init ();
1436 209113 : push_file_scope ();
1437 209113 : c_parse_file ();
1438 208809 : pop_file_scope ();
1439 : /* And end the main input file, if the debug writer wants it */
1440 208809 : if (debug_hooks->start_end_main_source_file)
1441 39738 : (*debug_hooks->end_source_file) (0);
1442 208809 : if (++i >= num_in_fnames)
1443 : break;
1444 0 : cpp_undef_all (parse_in);
1445 0 : cpp_clear_file_cache (parse_in);
1446 0 : this_input_filename
1447 0 : = cpp_read_main_file (parse_in, in_fnames[i]);
1448 : /* If an input file is missing, abandon further compilation.
1449 : cpplib has issued a diagnostic. */
1450 0 : if (!this_input_filename)
1451 : break;
1452 0 : dumps->dump_finish (TDI_original);
1453 : }
1454 :
1455 208809 : c_parse_final_cleanups ();
1456 208797 : dumps->dump_finish (TDI_original);
1457 208797 : }
1458 :
1459 : /* Common finish hook for the C, ObjC and C++ front ends. */
1460 : void
1461 215796 : c_common_finish (void)
1462 : {
1463 215796 : FILE *deps_stream = NULL;
1464 215796 : FILE *fdeps_stream = NULL;
1465 :
1466 : /* Note that we write the dependencies even if there are errors. This is
1467 : useful for handling outdated generated headers that now trigger errors
1468 : (for example, with #error) which would be resolved by re-generating
1469 : them. In a sense, this complements -MG. */
1470 215796 : if (cpp_opts->deps.style != DEPS_NONE)
1471 : {
1472 : /* If -M or -MM was seen without -MF, default output to the
1473 : output stream. */
1474 5918 : if (!deps_file)
1475 25 : deps_stream = out_stream;
1476 5893 : else if (deps_file[0] == '-' && deps_file[1] == '\0')
1477 0 : deps_stream = stdout;
1478 : else
1479 : {
1480 11786 : deps_stream = fopen (deps_file, deps_append ? "a" : "w");
1481 5893 : if (!deps_stream)
1482 0 : fatal_error (input_location, "opening dependency file %s: %m",
1483 : deps_file);
1484 : }
1485 : }
1486 :
1487 : /* When we call cpp_finish (), it may generate some diagnostics using
1488 : locations it remembered from the preprocessing phase, e.g. for
1489 : -Wunused-macros. So inform c_cpp_diagnostic () not to override those
1490 : locations with input_location, which would be incorrect now. */
1491 215796 : override_libcpp_locations = false;
1492 :
1493 215796 : if (cpp_opts->deps.fdeps_format != FDEPS_FMT_NONE)
1494 : {
1495 36 : if (!fdeps_file)
1496 0 : fdeps_stream = out_stream;
1497 36 : else if (fdeps_file[0] == '-' && fdeps_file[1] == '\0')
1498 0 : fdeps_stream = stdout;
1499 : else
1500 : {
1501 36 : fdeps_stream = fopen (fdeps_file, "w");
1502 36 : if (!fdeps_stream)
1503 0 : fatal_error (input_location, "opening dependency file %s: %m",
1504 : fdeps_file);
1505 : }
1506 36 : if (fdeps_stream == deps_stream && fdeps_stream != stdout)
1507 0 : fatal_error (input_location, "%<-MF%> and %<-fdeps-file=%> cannot share an output file %s: %m",
1508 0 : fdeps_file ? fdeps_file : out_fname);
1509 : }
1510 :
1511 : /* For performance, avoid tearing down cpplib's internal structures
1512 : with cpp_destroy (). */
1513 215796 : cpp_finish (parse_in, deps_stream, fdeps_stream);
1514 :
1515 5918 : if (deps_stream && deps_stream != out_stream && deps_stream != stdout
1516 221689 : && (ferror (deps_stream) || fclose (deps_stream)))
1517 0 : fatal_error (input_location, "closing dependency file %s: %m", deps_file);
1518 :
1519 215796 : if (out_stream && (ferror (out_stream) || fclose (out_stream)))
1520 0 : fatal_error (input_location, "when writing output to %s: %m", out_fname);
1521 215796 : }
1522 :
1523 : /* Either of two environment variables can specify output of
1524 : dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE
1525 : DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to
1526 : and DEPS_TARGET is the target to mention in the deps. They also
1527 : result in dependency information being appended to the output file
1528 : rather than overwriting it, and like Sun's compiler
1529 : SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */
1530 : static void
1531 210610 : check_deps_environment_vars (void)
1532 : {
1533 210610 : char *spec;
1534 :
1535 210610 : spec = getenv ("DEPENDENCIES_OUTPUT");
1536 210610 : if (spec)
1537 0 : cpp_opts->deps.style = DEPS_USER;
1538 : else
1539 : {
1540 210610 : spec = getenv ("SUNPRO_DEPENDENCIES");
1541 210610 : if (spec)
1542 : {
1543 0 : cpp_opts->deps.style = DEPS_SYSTEM;
1544 0 : cpp_opts->deps.ignore_main_file = true;
1545 : }
1546 : }
1547 :
1548 0 : if (spec)
1549 : {
1550 : /* Find the space before the DEPS_TARGET, if there is one. */
1551 0 : char *s = strchr (spec, ' ');
1552 0 : if (s)
1553 : {
1554 : /* Let the caller perform MAKE quoting. */
1555 0 : defer_opt (OPT_MT, s + 1);
1556 0 : *s = '\0';
1557 : }
1558 :
1559 : /* Command line -MF overrides environment variables and default. */
1560 0 : if (!deps_file)
1561 0 : deps_file = spec;
1562 :
1563 0 : deps_append = 1;
1564 0 : deps_seen = true;
1565 : }
1566 210610 : }
1567 :
1568 : /* Handle deferred command line switches. */
1569 : static void
1570 216533 : handle_deferred_opts (void)
1571 : {
1572 : /* Avoid allocating the deps buffer if we don't need it.
1573 : (This flag may be true without there having been -MT or -MQ
1574 : options, but we'll still need the deps buffer.) */
1575 216533 : if (!deps_seen)
1576 : return;
1577 :
1578 5922 : if (mkdeps *deps = cpp_get_deps (parse_in))
1579 35028 : for (unsigned i = 0; i < deferred_count; i++)
1580 : {
1581 29130 : struct deferred_opt *opt = &deferred_opts[i];
1582 :
1583 29130 : if (opt->code == OPT_MT || opt->code == OPT_MQ)
1584 5888 : deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
1585 23242 : else if (opt->code == OPT_fdeps_target_)
1586 42 : fdeps_add_target (deps, opt->arg, true);
1587 : }
1588 : }
1589 :
1590 : /* These settings are appropriate for GCC, but not necessarily so for
1591 : cpplib as a library. */
1592 : static void
1593 216533 : sanitize_cpp_opts (void)
1594 : {
1595 : /* If we don't know what style of dependencies to output, complain
1596 : if any other dependency switches have been given. */
1597 216533 : if (deps_seen && cpp_opts->deps.style == DEPS_NONE)
1598 24 : error ("to generate dependencies you must specify either %<-M%> "
1599 : "or %<-MM%>");
1600 :
1601 : /* -dM and dependencies suppress normal output; do it here so that
1602 : the last -d[MDN] switch overrides earlier ones. */
1603 216533 : if (flag_dump_macros == 'M')
1604 80 : flag_no_output = 1;
1605 :
1606 : /* By default, -fdirectives-only implies -dD. This allows subsequent phases
1607 : to perform proper macro expansion. */
1608 216533 : if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros)
1609 80 : flag_dump_macros = 'D';
1610 :
1611 : /* Disable -dD, -dN and -dI if normal output is suppressed. Allow
1612 : -dM since at least glibc relies on -M -dM to work. */
1613 : /* Also, flag_no_output implies flag_no_line_commands, always. */
1614 216533 : if (flag_no_output)
1615 : {
1616 110 : if (flag_dump_macros != 'M')
1617 30 : flag_dump_macros = 0;
1618 110 : flag_dump_includes = 0;
1619 110 : flag_no_line_commands = 1;
1620 : }
1621 216423 : else if (cpp_opts->deps.missing_files)
1622 1 : error ("%<-MG%> may only be used with %<-M%> or %<-MM%>");
1623 :
1624 216533 : cpp_opts->unsigned_char = !flag_signed_char;
1625 216533 : cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS;
1626 :
1627 : /* Wlong-long is disabled by default. It is enabled by:
1628 : [-Wpedantic | -Wtraditional] -std=[gnu|c]++98 ; or
1629 : [-Wpedantic | -Wtraditional] -std=non-c99
1630 :
1631 : Either -Wlong-long or -Wno-long-long override any other settings.
1632 : ??? These conditions should be handled in c.opt. */
1633 216533 : if (warn_long_long == -1)
1634 : {
1635 166135 : warn_long_long = ((pedantic || warn_traditional)
1636 169896 : && (c_dialect_cxx () ? cxx_dialect == cxx98 : !flag_isoc99));
1637 169872 : cpp_opts->cpp_warn_long_long = warn_long_long;
1638 : }
1639 :
1640 : /* If we're generating preprocessor output, emit current directory
1641 : if explicitly requested or if debugging information is enabled.
1642 : ??? Maybe we should only do it for debugging formats that
1643 : actually output the current directory? */
1644 216533 : if (flag_working_directory == -1)
1645 215263 : flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE);
1646 :
1647 216533 : if (warn_implicit_fallthrough < 5)
1648 216529 : cpp_opts->cpp_warn_implicit_fallthrough = warn_implicit_fallthrough;
1649 : else
1650 4 : cpp_opts->cpp_warn_implicit_fallthrough = 0;
1651 :
1652 216533 : if (cpp_opts->directives_only)
1653 : {
1654 121 : if (cpp_warn_unused_macros)
1655 4 : error ("%<-fdirectives-only%> is incompatible "
1656 : "with %<-Wunused-macros%>");
1657 121 : if (cpp_opts->traditional)
1658 1 : error ("%<-fdirectives-only%> is incompatible with %<-traditional%>");
1659 : }
1660 216533 : }
1661 :
1662 : /* Add include path with a prefix at the front of its name. */
1663 : static void
1664 0 : add_prefixed_path (const char *suffix, incpath_kind chain)
1665 : {
1666 0 : char *path;
1667 0 : const char *prefix;
1668 0 : size_t prefix_len, suffix_len;
1669 :
1670 0 : suffix_len = strlen (suffix);
1671 0 : prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR;
1672 0 : prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len;
1673 :
1674 0 : path = (char *) xmalloc (prefix_len + suffix_len + 1);
1675 0 : memcpy (path, prefix, prefix_len);
1676 0 : memcpy (path + prefix_len, suffix, suffix_len);
1677 0 : path[prefix_len + suffix_len] = '\0';
1678 :
1679 0 : add_path (path, chain, 0, false);
1680 0 : }
1681 :
1682 : /* Handle -D, -U, -A, -imacros, and the first -include. */
1683 : static void
1684 216307 : c_finish_options (void)
1685 : {
1686 216307 : if (!cpp_opts->preprocessed)
1687 : {
1688 215770 : const line_map_ordinary *bltin_map
1689 215770 : = linemap_check_ordinary (linemap_add (line_table, LC_RENAME, 0,
1690 : special_fname_builtin (), 0));
1691 215770 : cb_file_change (parse_in, bltin_map);
1692 215770 : linemap_line_start (line_table, 0, 1);
1693 :
1694 : /* Make sure all of the builtins about to be declared have
1695 : BUILTINS_LOCATION has their location_t. */
1696 215770 : cpp_force_token_locations (parse_in, BUILTINS_LOCATION);
1697 :
1698 215770 : cpp_init_builtins (parse_in, flag_hosted);
1699 215770 : c_cpp_builtins (parse_in);
1700 :
1701 : /* We're about to send user input to cpplib, so make it warn for
1702 : things that we previously (when we sent it internal definitions)
1703 : told it to not warn.
1704 :
1705 : C99 permits implementation-defined characters in identifiers.
1706 : The documented meaning of -std= is to turn off extensions that
1707 : conflict with the specified standard, and since a strictly
1708 : conforming program cannot contain a '$', we do not condition
1709 : their acceptance on the -std= setting. */
1710 215770 : cpp_opts->warn_dollars = (cpp_opts->cpp_pedantic && !cpp_opts->c99);
1711 :
1712 215770 : const line_map_ordinary *cmd_map
1713 215770 : = linemap_check_ordinary (linemap_add (line_table, LC_RENAME, 0,
1714 215770 : _("<command-line>"), 0));
1715 215770 : cb_file_change (parse_in, cmd_map);
1716 215770 : linemap_line_start (line_table, 0, 1);
1717 :
1718 215770 : bool fortify_seen_p = false;
1719 215770 : bool cxx_assert_seen_p = false;
1720 :
1721 : /* All command line defines must have the same location. */
1722 215770 : line_table->cmdline_location = line_table->highest_line;
1723 215770 : cpp_force_token_locations (parse_in, line_table->highest_line);
1724 403034 : for (size_t i = 0; i < deferred_count; i++)
1725 : {
1726 187264 : struct deferred_opt *opt = &deferred_opts[i];
1727 :
1728 187264 : if (opt->code == OPT_D)
1729 171907 : cpp_define (parse_in, opt->arg);
1730 15357 : else if (opt->code == OPT_U)
1731 60 : cpp_undef (parse_in, opt->arg);
1732 15297 : else if (opt->code == OPT_A)
1733 : {
1734 10 : if (opt->arg[0] == '-')
1735 2 : cpp_unassert (parse_in, opt->arg + 1);
1736 : else
1737 8 : cpp_assert (parse_in, opt->arg);
1738 : }
1739 :
1740 187264 : if (UNLIKELY (flag_hardened)
1741 83 : && (opt->code == OPT_D || opt->code == OPT_U))
1742 : {
1743 83 : if (!fortify_seen_p)
1744 79 : fortify_seen_p
1745 79 : = (!strncmp (opt->arg, "_FORTIFY_SOURCE", 15)
1746 79 : && (opt->arg[15] == '\0' || opt->arg[15] == '='));
1747 83 : if (!cxx_assert_seen_p)
1748 83 : cxx_assert_seen_p
1749 83 : = (!strncmp (opt->arg, "_GLIBCXX_ASSERTIONS", 19)
1750 83 : && (opt->arg[19] == '\0' || opt->arg[19] == '='));
1751 : }
1752 : }
1753 :
1754 215770 : if (flag_hardened)
1755 : {
1756 92 : if (!fortify_seen_p && optimize > 0)
1757 72 : cpp_define_formatted (parse_in, "_FORTIFY_SOURCE=%u",
1758 72 : targetm.fortify_source_default_level ());
1759 20 : else if (optimize == 0)
1760 20 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1761 : "%<_FORTIFY_SOURCE%> is not enabled by %<-fhardened%> "
1762 : "because optimizations are turned off");
1763 : else
1764 0 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1765 : "%<_FORTIFY_SOURCE%> is not enabled by %<-fhardened%> "
1766 : "because it was specified in %<-D%> or %<-U%>");
1767 92 : if (!cxx_assert_seen_p)
1768 88 : cpp_define (parse_in, "_GLIBCXX_ASSERTIONS");
1769 : else
1770 4 : warning_at (UNKNOWN_LOCATION, OPT_Whardened,
1771 : "%<_GLIBCXX_ASSERTIONS%> is not enabled by "
1772 : "%<-fhardened%> because it was specified in %<-D%> "
1773 : "or %<-U%>");
1774 : }
1775 :
1776 215770 : cpp_stop_forcing_token_locations (parse_in);
1777 : }
1778 537 : else if (cpp_opts->directives_only)
1779 41 : cpp_init_special_builtins (parse_in);
1780 :
1781 : /* Start the main input file, if the debug writer wants it. */
1782 216307 : if (debug_hooks->start_end_main_source_file
1783 42077 : && !flag_preprocess_only)
1784 39853 : (*debug_hooks->start_source_file) (0, this_input_filename);
1785 :
1786 216307 : if (!cpp_opts->preprocessed)
1787 : /* Handle -imacros after -D and -U. */
1788 403034 : for (size_t i = 0; i < deferred_count; i++)
1789 : {
1790 187264 : struct deferred_opt *opt = &deferred_opts[i];
1791 :
1792 187264 : if (opt->code == OPT_imacros
1793 187264 : && cpp_push_include (parse_in, opt->arg))
1794 : {
1795 : /* Disable push_command_line_include callback for now. */
1796 8 : include_cursor = deferred_count + 1;
1797 8 : cpp_scan_nooutput (parse_in);
1798 : }
1799 : }
1800 :
1801 216307 : include_cursor = 0;
1802 216307 : push_command_line_include ();
1803 216307 : }
1804 :
1805 : /* Give CPP the next file given by -include, if any. */
1806 : static void
1807 761911 : push_command_line_include (void)
1808 : {
1809 : /* This can happen if disabled by -imacros for example.
1810 : Punt so that we don't set "<command-line>" as the filename for
1811 : the header. */
1812 761911 : if (include_cursor > deferred_count)
1813 : return;
1814 :
1815 441341 : if (!done_preinclude)
1816 : {
1817 216307 : done_preinclude = true;
1818 216307 : if (flag_hosted && std_inc && !cpp_opts->preprocessed)
1819 : {
1820 215688 : const char *preinc = targetcm.c_preinclude ();
1821 215688 : if (preinc && cpp_push_default_include (parse_in, preinc))
1822 : return;
1823 : }
1824 : }
1825 :
1826 225653 : pch_cpp_save_state ();
1827 :
1828 629275 : while (include_cursor < deferred_count)
1829 : {
1830 187316 : struct deferred_opt *opt = &deferred_opts[include_cursor++];
1831 :
1832 374579 : if (!cpp_opts->preprocessed && opt->code == OPT_include
1833 196666 : && cpp_push_include (parse_in, opt->arg))
1834 : return;
1835 : }
1836 :
1837 216306 : if (include_cursor == deferred_count)
1838 : {
1839 216306 : include_cursor++;
1840 : /* -Wunused-macros should only warn about macros defined hereafter. */
1841 216306 : cpp_opts->warn_unused_macros = cpp_warn_unused_macros;
1842 : /* Restore the line map back to the main file. */
1843 216306 : if (!cpp_opts->preprocessed)
1844 : {
1845 215769 : cpp_change_file (parse_in, LC_RENAME, this_input_filename);
1846 215769 : if (lang_hooks.preprocess_main_file)
1847 : /* We're starting the main file. Inform the FE of that. */
1848 99499 : lang_hooks.preprocess_main_file
1849 99499 : (parse_in, line_table, LINEMAPS_LAST_ORDINARY_MAP (line_table));
1850 : }
1851 :
1852 : /* Set this here so the client can change the option if it wishes,
1853 : and after stacking the main file so we don't trace the main file. */
1854 216306 : line_table->trace_includes = cpp_opts->print_include_names;
1855 : }
1856 : }
1857 :
1858 : /* File change callback. Has to handle -include files. */
1859 : static void
1860 20654246 : cb_file_change (cpp_reader *reader, const line_map_ordinary *new_map)
1861 : {
1862 20654246 : if (flag_preprocess_only)
1863 182741 : pp_file_change (new_map);
1864 : else
1865 20471505 : fe_file_change (new_map);
1866 :
1867 20438343 : if (new_map && cpp_opts->preprocessed
1868 40416 : && lang_hooks.preprocess_main_file && MAIN_FILE_P (new_map)
1869 20656860 : && ORDINARY_MAP_STARTING_LINE_NUMBER (new_map))
1870 : /* We're starting the main file. Inform the FE of that. */
1871 468 : lang_hooks.preprocess_main_file (reader, line_table, new_map);
1872 :
1873 20654246 : if (new_map
1874 20438343 : && (new_map->reason == LC_ENTER || new_map->reason == LC_RENAME))
1875 : {
1876 : /* Signal to plugins that a file is included. This could happen
1877 : several times with the same file path, e.g. because of
1878 : several '#include' or '#line' directives... */
1879 10653017 : invoke_plugin_callbacks
1880 10653017 : (PLUGIN_INCLUDE_FILE,
1881 10653017 : const_cast<char*> (ORDINARY_MAP_FILE_NAME (new_map)));
1882 : }
1883 :
1884 20438343 : if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map)))
1885 : {
1886 545604 : pch_cpp_save_state ();
1887 545604 : push_command_line_include ();
1888 : }
1889 20654245 : }
1890 :
1891 : void
1892 53 : cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir)
1893 : {
1894 53 : if (!set_src_pwd (dir))
1895 0 : warning (0, "too late for # directive to set debug directory");
1896 53 : }
1897 :
1898 : /* Set the C 89 standard (with 1994 amendments if C94, without GNU
1899 : extensions if ISO). There is no concept of gnu94. */
1900 : static void
1901 6970 : set_std_c89 (int c94, int iso)
1902 : {
1903 9923 : cpp_set_lang (parse_in, c94 ? CLK_STDC94 : iso ? CLK_STDC89 : CLK_GNUC89);
1904 6970 : flag_iso = iso;
1905 6970 : flag_no_asm = iso;
1906 6970 : flag_no_gnu_keywords = iso;
1907 6970 : flag_no_nonansi_builtin = iso;
1908 6970 : flag_isoc94 = c94;
1909 6970 : flag_isoc99 = 0;
1910 6970 : flag_isoc11 = 0;
1911 6970 : flag_isoc23 = 0;
1912 6970 : flag_isoc2y = 0;
1913 6970 : lang_hooks.name = "GNU C89";
1914 6970 : }
1915 :
1916 : /* Set the C 99 standard (without GNU extensions if ISO). */
1917 : static void
1918 1196 : set_std_c99 (int iso)
1919 : {
1920 1812 : cpp_set_lang (parse_in, iso ? CLK_STDC99 : CLK_GNUC99);
1921 1196 : flag_no_asm = iso;
1922 1196 : flag_no_nonansi_builtin = iso;
1923 1196 : flag_iso = iso;
1924 1196 : flag_isoc2y = 0;
1925 1196 : flag_isoc23 = 0;
1926 1196 : flag_isoc11 = 0;
1927 1196 : flag_isoc99 = 1;
1928 1196 : flag_isoc94 = 1;
1929 1196 : lang_hooks.name = "GNU C99";
1930 1196 : }
1931 :
1932 : /* Set the C 11 standard (without GNU extensions if ISO). */
1933 : static void
1934 4232 : set_std_c11 (int iso)
1935 : {
1936 7950 : cpp_set_lang (parse_in, iso ? CLK_STDC11 : CLK_GNUC11);
1937 4232 : flag_no_asm = iso;
1938 4232 : flag_no_nonansi_builtin = iso;
1939 4232 : flag_iso = iso;
1940 4232 : flag_isoc2y = 0;
1941 4232 : flag_isoc23 = 0;
1942 4232 : flag_isoc11 = 1;
1943 4232 : flag_isoc99 = 1;
1944 4232 : flag_isoc94 = 1;
1945 4232 : lang_hooks.name = "GNU C11";
1946 4232 : }
1947 :
1948 : /* Set the C 17 standard (without GNU extensions if ISO). */
1949 : static void
1950 819 : set_std_c17 (int iso)
1951 : {
1952 1596 : cpp_set_lang (parse_in, iso ? CLK_STDC17 : CLK_GNUC17);
1953 819 : flag_no_asm = iso;
1954 819 : flag_no_nonansi_builtin = iso;
1955 819 : flag_iso = iso;
1956 819 : flag_isoc2y = 0;
1957 819 : flag_isoc23 = 0;
1958 819 : flag_isoc11 = 1;
1959 819 : flag_isoc99 = 1;
1960 819 : flag_isoc94 = 1;
1961 819 : lang_hooks.name = "GNU C17";
1962 819 : }
1963 :
1964 : /* Set the C 23 standard (without GNU extensions if ISO). */
1965 : static void
1966 117997 : set_std_c23 (int iso)
1967 : {
1968 235086 : cpp_set_lang (parse_in, iso ? CLK_STDC23 : CLK_GNUC23);
1969 117997 : flag_no_asm = iso;
1970 117997 : flag_no_nonansi_builtin = iso;
1971 117997 : flag_iso = iso;
1972 117997 : flag_isoc2y = 0;
1973 117997 : flag_isoc23 = 1;
1974 117997 : flag_isoc11 = 1;
1975 117997 : flag_isoc99 = 1;
1976 117997 : flag_isoc94 = 1;
1977 117997 : lang_hooks.name = "GNU C23";
1978 117997 : }
1979 :
1980 : /* Set the C 2Y standard (without GNU extensions if ISO). */
1981 : static void
1982 215 : set_std_c2y (int iso)
1983 : {
1984 226 : cpp_set_lang (parse_in, iso ? CLK_STDC2Y : CLK_GNUC2Y);
1985 215 : flag_no_asm = iso;
1986 215 : flag_no_nonansi_builtin = iso;
1987 215 : flag_iso = iso;
1988 215 : flag_isoc2y = 1;
1989 215 : flag_isoc23 = 1;
1990 215 : flag_isoc11 = 1;
1991 215 : flag_isoc99 = 1;
1992 215 : flag_isoc94 = 1;
1993 215 : lang_hooks.name = "GNU C2Y";
1994 215 : }
1995 :
1996 :
1997 : /* Set the C++ 98 standard (without GNU extensions if ISO). */
1998 : static void
1999 14265 : set_std_cxx98 (int iso)
2000 : {
2001 19644 : cpp_set_lang (parse_in, iso ? CLK_CXX98 : CLK_GNUCXX);
2002 14265 : flag_no_gnu_keywords = iso;
2003 14265 : flag_no_nonansi_builtin = iso;
2004 14265 : flag_iso = iso;
2005 14265 : flag_isoc94 = 0;
2006 14265 : flag_isoc99 = 0;
2007 14265 : cxx_dialect = cxx98;
2008 14265 : lang_hooks.name = "GNU C++98";
2009 14265 : }
2010 :
2011 : /* Set the C++ 2011 standard (without GNU extensions if ISO). */
2012 : static void
2013 5709 : set_std_cxx11 (int iso)
2014 : {
2015 7159 : cpp_set_lang (parse_in, iso ? CLK_CXX11 : CLK_GNUCXX11);
2016 5709 : flag_no_gnu_keywords = iso;
2017 5709 : flag_no_nonansi_builtin = iso;
2018 5709 : flag_iso = iso;
2019 : /* C++11 includes the C99 standard library. */
2020 5709 : flag_isoc94 = 1;
2021 5709 : flag_isoc99 = 1;
2022 5709 : cxx_dialect = cxx11;
2023 5709 : lang_hooks.name = "GNU C++11";
2024 5709 : }
2025 :
2026 : /* Set the C++ 2014 standard (without GNU extensions if ISO). */
2027 : static void
2028 1299 : set_std_cxx14 (int iso)
2029 : {
2030 1579 : cpp_set_lang (parse_in, iso ? CLK_CXX14 : CLK_GNUCXX14);
2031 1299 : flag_no_gnu_keywords = iso;
2032 1299 : flag_no_nonansi_builtin = iso;
2033 1299 : flag_iso = iso;
2034 : /* C++14 includes the C99 standard library. */
2035 1299 : flag_isoc94 = 1;
2036 1299 : flag_isoc99 = 1;
2037 1299 : cxx_dialect = cxx14;
2038 1299 : lang_hooks.name = "GNU C++14";
2039 1299 : }
2040 :
2041 : /* Set the C++ 2017 standard (without GNU extensions if ISO). */
2042 : static void
2043 4208 : set_std_cxx17 (int iso)
2044 : {
2045 5142 : cpp_set_lang (parse_in, iso ? CLK_CXX17 : CLK_GNUCXX17);
2046 4208 : flag_no_gnu_keywords = iso;
2047 4208 : flag_no_nonansi_builtin = iso;
2048 4208 : flag_iso = iso;
2049 : /* C++17 includes the C11 standard library. */
2050 4208 : flag_isoc94 = 1;
2051 4208 : flag_isoc99 = 1;
2052 4208 : flag_isoc11 = 1;
2053 4208 : cxx_dialect = cxx17;
2054 4208 : lang_hooks.name = "GNU C++17";
2055 4208 : }
2056 :
2057 : /* Set the C++ 2020 standard (without GNU extensions if ISO). */
2058 : static void
2059 131947 : set_std_cxx20 (int iso)
2060 : {
2061 247216 : cpp_set_lang (parse_in, iso ? CLK_CXX20 : CLK_GNUCXX20);
2062 131947 : flag_no_gnu_keywords = iso;
2063 131947 : flag_no_nonansi_builtin = iso;
2064 131947 : flag_iso = iso;
2065 : /* C++20 includes the C11 standard library. */
2066 131947 : flag_isoc94 = 1;
2067 131947 : flag_isoc99 = 1;
2068 131947 : flag_isoc11 = 1;
2069 131947 : cxx_dialect = cxx20;
2070 131947 : lang_hooks.name = "GNU C++20";
2071 131947 : }
2072 :
2073 : /* Set the C++ 2023 standard (without GNU extensions if ISO). */
2074 : static void
2075 2144 : set_std_cxx23 (int iso)
2076 : {
2077 2713 : cpp_set_lang (parse_in, iso ? CLK_CXX23 : CLK_GNUCXX23);
2078 2144 : flag_no_gnu_keywords = iso;
2079 2144 : flag_no_nonansi_builtin = iso;
2080 2144 : flag_iso = iso;
2081 : /* C++23 includes the C11 standard library. */
2082 2144 : flag_isoc94 = 1;
2083 2144 : flag_isoc99 = 1;
2084 2144 : flag_isoc11 = 1;
2085 2144 : cxx_dialect = cxx23;
2086 2144 : lang_hooks.name = "GNU C++23";
2087 2144 : }
2088 :
2089 : /* Set the C++ 2026 standard (without GNU extensions if ISO). */
2090 : static void
2091 1632 : set_std_cxx26 (int iso)
2092 : {
2093 2308 : cpp_set_lang (parse_in, iso ? CLK_CXX26 : CLK_GNUCXX26);
2094 1632 : flag_no_gnu_keywords = iso;
2095 1632 : flag_no_nonansi_builtin = iso;
2096 1632 : flag_iso = iso;
2097 : /* C++26 includes the C11 standard library. */
2098 1632 : flag_isoc94 = 1;
2099 1632 : flag_isoc99 = 1;
2100 1632 : flag_isoc11 = 1;
2101 1632 : cxx_dialect = cxx26;
2102 1632 : lang_hooks.name = "GNU C++26";
2103 1632 : }
2104 :
2105 : /* Set the C++ 2029 standard (without GNU extensions if ISO). */
2106 : static void
2107 23249 : set_std_cxx29 (int iso)
2108 : {
2109 29586 : cpp_set_lang (parse_in, iso ? CLK_CXX29 : CLK_GNUCXX29);
2110 23249 : flag_no_gnu_keywords = iso;
2111 23249 : flag_no_nonansi_builtin = iso;
2112 23249 : flag_iso = iso;
2113 : /* C++29 includes the C11 standard library. */
2114 23249 : flag_isoc94 = 1;
2115 23249 : flag_isoc99 = 1;
2116 23249 : flag_isoc11 = 1;
2117 23249 : cxx_dialect = cxx29;
2118 23249 : lang_hooks.name = "GNU C++29";
2119 23249 : }
2120 :
2121 : /* Args to -d specify what to dump. Silently ignore
2122 : unrecognized options; they may be aimed at toplev.cc. */
2123 : static void
2124 1634 : handle_OPT_d (const char *arg)
2125 : {
2126 1634 : char c;
2127 :
2128 3268 : while ((c = *arg++) != '\0')
2129 1634 : switch (c)
2130 : {
2131 793 : case 'M': /* Dump macros only. */
2132 793 : case 'N': /* Dump names. */
2133 793 : case 'D': /* Dump definitions. */
2134 793 : case 'U': /* Dump used macros. */
2135 793 : flag_dump_macros = c;
2136 793 : break;
2137 :
2138 2 : case 'I':
2139 2 : flag_dump_includes = 1;
2140 2 : break;
2141 : }
2142 1634 : }
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